Well-drilling apparatus



March 18, 1930. c s, WR|GHT 1,750,982

WELL DRILLING APPARATUS Filed May 27, 1927 2 Sheets-Sheet l INVENTOR.

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ATTORNEY March 18, 1930. c. s. WRIGHT WELL DRILLING APPARATUS Filed May 2'7, 1927 2 Sheets-Sheet 2 INVENT0R. CIS' WWW I ATTORNEY 1 Patented Mar. 18, 1930 Application filed Kay 2'7, 192

My invention relates towed-drilling apparaus' v, )ne object ofthis inventionis to provide a portable well-drilling apparatus which may, 7 I g vice 'h'rfiiiflsis tli43W 81' 1 h r a members by the tilts ifjdesired, be attached to a vmaster atower' erected at a Well. Another ob e'ct"1s to provide novel details of construction which will be explained and claimed hereinafter.

Referring to the accompanying drawings, 11

Fig. 1 is a side elevation of a drilling ap aratus containing m invention, eing brokenaway;

elevation of that part of myapparatus' iiiwhich the invention particnlarly'resides; Fig. 16 3, an elevation looking at Fig. 2 from the left.

On the drawings,i' 1 designates mast I in elevated position. It has the foot 2' resting 2 on the base 3 andsuitable sheave's'at the top' (only one, marked i, b ing shown) -for the tool line 5 and the line djwhich may belat tached, as shown iniFig. 1, I by the clamp 7 in a manner and ior p'urposes well known. When the line6' isconne cte {to the tool line 5 by the clamp ,that part of the tool line below, the clamp becomes an ex- Ztension of the line 6. In fact, the line 6, and

the line 5 from the clamp down constitutethe,

drill line. The line 5 is'con'nec ted tot-he hoist drum 8 on the tractor 9. i f

The lower end of the mast has atopposite sides thereof the two channel" bars for braces 10 which diverge downwardlyandhave their upper ends in engagement withthe nast and connected together by the gusset plates 11 engagingopposite sides of the mast. and riveted to oppositeedgesof the harsh). The lower ends of thebars 10 are connectedtogether by the base channel bars 12 .which engage opposite sides of the mast and are riveted to the said bars. A channel bar l3 pa'r'allel with the base bars 12 is riveted to the rear edges of the bars 10. i i

The parts so far maybe a pernianent feature, theparts 10, 1 1, l2and13 cornprising a frame to which a pullingvniechanis n of the general type shown in my application Serial No.185,98lfil ed April 23, l927lmay be removably attached. To this vframethe asslcnoaro r 1 1 s a-amm A e a portion 1g; 2, an enlarged side 1 frame mean like that ofFig. 2, but showing the side opposite; and Fig. 4, an elevation 12, theinast 1, the lower endof the side frame member'Li, and the spacing block 21' seated to -th i e (1" the horizontal shafts 26 and wheel 28, driven by shaft 27 carries also the thereof to receive the crank-pin 37 carried "by the crank arm 31. to the tance from the pivot 33 of the lever. This Iii-i portablebe described desired? The? frame of 'the spnddm detachably connected res on the mast bj' tlifbbltszl's an 19t'th extendingthron hthe ppper end frame' iiiein ber 16 Mid that the biirs lfiifihe gusset plates 11, and a' s acin'g block 20'between the side er 14 and the gusset plates 11.

"I The bolts 19 extend through the base bars between the seidmember'M and the adjacent base'bar 12. The eide'frame member 15 is connected to the base bars 10 bythe bolts 22.

Thesidc members 14' and 15 of the frame just described" support the bars 23 parallel therewith and carryingat their upper and lower portionsthe bearings 24" and 25' for 27. The shaft 27 is the driving shaft and carries the sprocket the tractor through apdriving means, as shown. The I pinion 29 which drives the spur gear 30 on the shaft 26, which has keyed thereto thec'rank arm 31. j 32 is a lever having one end connected by the pivot. 33 to the bracket 34 which is sepropriate cured to the bar 13 by the bolt 35. The lever has the slot 36 extending longitudinally 85 I The line'6 is connected free or outer end of thelever 32, which in its middle position is horizontal.

\Viththe parts as in Figs. 1 and 2 and. the

crank arm and gear rotating in the direction shown by'the arrow on Fig. 2, the arm will be forcedfdown at a comparatively slow speed since the crank pin is'at its maximum disproyidesa slow speed for raising the drilling tools on the lower end of the line 5. y

I \Vhenthe crankpin is traveling up between the shaft 26 and the pivot 33 the lever evidently has a faster movement upwardly than it had downwardly. The tools are lifted at first fromrest very slowly,'their speed upwardly increasing gradually from the travel of the lever-fromits upper position shown 5 in Fig; 3 to its medialposition shownvin Fig. I

2. The tools will: begin. to drop rapidly as I V soon as the crank arm starts upwardly. g r

38 are braces between the side framemembers 14 and 15.

m-rd i 7 Ina well drilling apparatus, a. mast,

frame comprising a parallel pairof base bars, a

at opposite sides of the lower end of the mast, a pair of brace bars secured to opposite ends" 15 of the base bars and inclined upwardly to engage opposite sides of the mast, and a pair of plates engaging the opposite sides of the mast and secured to the opposite sides of the 'upper ends of the brace bar's, in combination with amachine frame, a mechanism mountedon the machine frame and adapted to cooperate with the mast, and means for detachably 1 7 connecting the frames together In testimony whereof, I hereunto aflix my signature. CLYDE S.. WRIGHT. 

